I'm used to buying a tire pressure gauge for $2, so spending $30 was a big leap for me. I bought a truck and a 5th wheel so it took me over ยฃ100. I love this clinical thermometer. The length is excellent, it is convenient to hold the valve. The pressure isn't exactly what my Ford truck says, but Ford says don't trust your gauge, use a good manual gauge. So how do you really know your tire pressure? Don't rely on Ford. Buy a good caliber from a trusted supplier and test it out with Discountโฆ